Stomach 33 (ST 33) Yin Shi — Yin Market

This point, above the knee, activates the channel and benefits the knee, dispelling wind-cold.

Stomach 33 (ST 33) Yin Shi 陰市 — Yin Market

Location

On the anterior thigh, 3 cun proximal to the superolateral border of the patella, on the line connecting the ASIS and the lateral border of the patella.

Anatomy

Between rectus femoris and vastus lateralis; the lateral circumflex femoral artery; the anterior and lateral femoral cutaneous nerves.

Actions & Functions

  • Activates the channel and dispels wind-cold
  • Benefits the knee and leg

Indications

Pain, coldness and weakness of the knee and leg, and motor impairment of the lower limb.

Needling

1.0-1.5 cun, perpendicular insertion.

Moxibustion Suitability

Suitable for moxibustion.

Point Combinations

With ST-34 and ST-35 for knee disorders.

Classical Text References

A local point for the knee.

Cautions & Contraindications

None specific.

Latest Research

Latest peer-reviewed research on this point will be summarised here, with citations linked to PubMed, via our research integration.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

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PubMed research

Acupuncture Identified as a Key Neuromuscular Intervention for Post-Stroke Swallowing Difficulties

Research summary (Acupuncture): Neuromuscular-related interventions for post-stroke dysphagia: a comprehensive narrative review. - Frontiers in neuroscience, 2026.